Mary Poppins/Trivia

Acting for Two:
- Dick Van Dyke played Bert and Mr. Dawes, Sr.
- In addition to playing Mr. Banks, David Tomlinson performed the voice for Mary Poppin's umbrella. He also voiced some of the characters in the chalk drawing scene.
- Julie Andrews whistled for the robin and was one of the female pearlies during "Supercalifragilisticexpialidocious".
- In the musical, depending on the production, the actress who plays Miss Andrew also plays either Queen Victoria or the Bird Woman.
Creator Backlash/Disowned Adaptation: P.L. Travers absolutely hated the film, due to it's changing of several elements of her original stories (in the books, Mary is a complete Jerkass throughout) and the inclusion of the animated sequence. So much so, that at the premiere, she approached Walt Disney before it's first screening, demanding the sequence be removed. Disney refused, and later, when the film had concluded, Travers broke down crying, not because the people hated the film, but because they were giving it a standing ovation.
Development Gag: "Stay Awake" uses a slowed-down version of Mary Poppins' rejected Leitmotif.
Development Hell: Walt Disney had first considered making a live-action adaptation of Mary Poppins as early as 1938, but P.L. Travers didn't think it could do justice for her books, mainly because Disney hadn't done any live-action films at the time.
Enforced Method Acting:
- Used a couple of times with the young actors playing Jane and Michael.
- The medicine bottle that pours different colors was a real working prop. The children were not informed of its purpose, so Karen Dotrice's shriek of delight is real.
- The children were unaware that Mr. Dawes Sr. was played by Dick Van Dyke. According to Karen Dotrice (Jane), she didn't know till she saw the end credits.
- Likewise, Karen Dotrice says that in the scene in which the children run away from the bank and get grabbed by a mysterious figure, they weren't told beforehand that the soot-covered figure was actually Bert, who was trying to calm them down.
Fake Brit: Dick Van Dyke. That accent. Ironically, he also plays Mr. Dawes Sr, doing so brilliant a job that many viewers don't even realize it's him.
- Hell, not even the child actors in the movie knew it was him until they saw the credits of the finished film.
Fake Irish: American Dal McKennon voices an animated Oirish fox.
Hey, It's That Guy!: The Banks' children's prior nanny, Katie Nanna, is the Bride of Frankenstein herself, Elsa Lancaster.
Production Posse: There are several Disney regulars in this film.
- Uncle Albert is played by Ed Wynn, who appeared in numerous Disney films, most notably being the voice of the Mad Hatter in Alice in Wonderland.
- In addition, the film's vocal coach, J. Pat O'Malley, also appeared in numerous Disney films; he was also in Alice in Wonderland, voicing Tweedledee and Tweedledum, and he was also Colonel Hathi in The Jungle Book.
- Hermione Baddeley, who played Ellen, the Banks' parlormaid, also was the voice of Madame Adelaide Bonfamille in The Aristocats.
- In addition, Thurl Ravenscroft, who voiced the hog in the barnyard scene in the animation sequence, also appeared in The Aristocats as the Russian cat.
- Director Robert Stevenson spent much of his career directing live-action Disney films.
- The child actors who played Jane and Michael previously appeared in The Three Lives Of Thomasina and later appeared together in The Gnome Mobile.
- Most of Disney's Nine Old Men worked on the animation in the chalk drawing scene.
- This was David Tomlinson's first Disney film, but he would go on to appear in The Love Bug and Bedknobs and Broomsticks, both of which were directed by the aforementioned Stevenson.
- This was also Irwin Kostal's first assignment for Disney as conductor and music arranger, but he later performed similar duties on Bedknobs and Broomsticks, Pete's Dragon, and Mickey's Christmas Carol, while his assistant, James MacDonald, was the featured percussionist for Fantasia as well as Walt Disney's replacement as the voice of Mickey Mouse and the original voice of Humphrey the Bear.
- The Sherman Brothers wrote music for several Disney films, mostly in the '60s and '70s.
The Red Stapler: Inverted in that modern nannies now have an impossibly high standard to live up to with employing families in the Western world.
Star-Making Role: For Julie Andrews. The Sound of Music came out shortly after this, solidifying it (and giving Andrews a lot of Typecasting she tried to shake off).
Throw It In:
- Mr. Dawes Sr.'s trouble walking down the stairs was something Dick Van Dyke did between takes.
- Bert's Cockney accent is this, basically. Mr. Van Dyke tried doing a serious Cockney accent but found he could only manage a bad one.
- Mary's "Cheeky!" comment when her reflection starts showing off was ad libbed by Julie Andrews.
What Could Have Been:
- Disney offered to do an animated adaptation of Mary Poppins, but Travers felt no one would take the movie seriously if it was animated.
  - After the film's success, Disney approached Travers for rights to film the other books, but given her absolute hatred of the movie, she unsurprisingly refused.
- Walt was negotiating to have the rights to film Bedknobs and Broomsticks in case negotiations for the rights to Mary Poppins fell through.
- The book had a chapter in which Mary Poppins and the children use a magic compass to visit different countries. The Sherman Brothers wrote a wide assortment of songs to use for their journey, but the chapter ultimately went unadapted.
- Although Julie Andrews was marvelous in her Oscar-winning turn as the magical nanny, you can't help but wonder what might have been if an earlier choice for the role had been the last; Angela Lansbury was seriously considered before Andrews was finally cast.
- P.L. Travers suggested dropping a few hints that Mr. Banks used to have Mary Poppins as his nanny.
- Mrs. Banks has no name in the books. The planned name for her was Cynthia but PL Travers wanted a more English sounding name - and they came up with Winifred. The names that Bert lists during the "Jolly Holiday" sequence are among those that were considered for her.